Socket wrench



w. H. FISHER socxm wanncn Filed Fag 5. 1925 Sept; 22,

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K trill/I552?! Patented Sept. 22,1925.

UNITED STATES PATENT WILLIAM H. FISHER, 01E ALTQONA, PENNSYLVANIA, A SIC-t-NOR OF ONE$EHTRB T6) ROBERT D. ELDER, OF JUNIA'IA, PENNSYLVANIA.

SOCKET WRENCH.

Application filed February 5, 1925. Serial No. 7,041.

To all whom it may concern.

Be it known that I, TILLIAM H. Fisnnn, a citizen of the United States of America, residing at Altoona, in the county of Blair and State of Pennsylvania, have invented new and useful THIPFOVGHIBDtS in Socket renches, of which the following -is a specification.

The purpose of the invention is to provide a socket wrench which shall be readily adjustable for different sizes of nuts within the range for which is it designed; which will function, when in operation, to increase the grip on the nut as turning force is applied to the operating handle; and which is constructed so that the parts may be readily disassembled for the interchange of one of the parts with a correspondingly shaped part to change the range.

With this purpose in view, the invention consists in a construction and combination of parts of which a preferred embodiment is illustrated in the accompanying drawings, wherein:

Fig. l is a side elevational view of the invention;

Fig. 2 is a similar view but looking in a direction at right angles to Fig. 1;

Fig. 3 is a central vertical sectional view on the plane indicated by the line 33 of Fig. 1;

Fig. 4 1s a horizontal transverse sectional view on the plane indicated by the line 1- 1 of Fig. 2; and

Fig. 5 is a bottom plan view.

The jaw elements A and B are relatively movable but inasmuch as the former is the element engaged by the wrench or operating member, it is hereinafter referred to as the stationary jaw element and the other as the movable jaw element. The jaw element B comprises the hollow body element on the lower face of which is formed the nut engaging aw 11, the angle 12 at the apex of which may be formed to adapt the element 11 for engagement either with square, hexagonal, or pentagonal nuts.

The body element 10 receives the body element 14: of the jaw element A, this body element 14 being formed on opposite sides with integral T-shaped slides 15 engageable in corresponding guide-ways 16 formed in the body element 10. The jaw element A is likewise provided with a nut-engaging element 11 disposed oppositely to the corresponding element carried by the jaw element B. The nut engaging elements 11 are formed as integral parts of their respective jaw elements and that carried by the jaw element A traverses the recess 17 formed in the bottom of the body element 10 in the adjustment of the nut-engaging members toward and from each other.

The body of the jaw element A is provided with a hollow shank 18 formed as an integral part thereof, the bore of the shank communicating with a horizontally ovalshaped chamber 18 in the body element. The chamber 18 will accommodate the pro truding portions of the larger sized bolts to permit the jaw-engaging members to reach the nut, and, in the smaller sizes, where the bolt extends a material distance beyond the nut, such extended portion may be accommodated by the hollow shank. In the movement of the nut-engaging elements toward and from each other, the shank traverses a recess 19 formed in the top of the body 10, said recess being formed on its side edges with rack teeth 20 engageable by teeth 21 formed on the under face of the nut 22, the latter loosely surrounding the shank 18 and being secured against axial movement which would disengage it from the shank by means of a transverse pin 23, the latter projecting laterally beyond the shank at diametrically opposite points to provide abutmeuts 24L disposed above the upper face of the nut 22.

In the adjustment of the meuiibers of the wrench to engage a particular sized nut, the nut 22 is rotated to position the teeth 21 at a point where none of them will be in engagement with any of the teeth 20. The two elements of the wrench are then free to be moved toward and from each other and, when the nut engaging members are brought into clamping engagement with, the nut to be operated upon, the nut 22 is rotated to bring the teeth in mesh with the teeth 20 on the one side or the other of the recess 19, depending on whether the nut being operated upon is to be screwed on or off its attaching bolt, or if it be a bolt, whether the latter is to be removed or tightened up.

The nut 22 is designed for engagement with any conventional form of operating member and preferably one with a ratchet and each time pressure is applied to such a member, the intermeshing teeth 20 and 21 tend to effect relative movement of the jaw elements and thus bring the nut engaging members 11 into firm clamping engagement with the nut or bolt being operated upon.

The particular construction provides for the replacement of one jaw elen'ieut A. with another of the same kind but with the nutengaging member 11 dilterentl; positioned, thus changing the range oi nuts on which the device will be serviceable. In such an exchange of parts, the pin 23 is driven out which permits the removal of the nut 22 and its application to the jaw element to replace the one removed when the device is ready for operation under the new range of work.

The invention ha ing been described, what is claimed as new and useful is:

1. A wrench tor the purpose indicated comprising slidably connected jaw elements provided witn work-engaging members, and

20 an actuating element rotatably mounted on one of said jaw elements, the other oi"? said jaw elements having series of rack teeth disposed on opposite sides ot said actuating element, and the latter having: an arcuate se ries of teeth selectively engageahle with either series of rack teeth.

2. A device for the purpose indicated comprising slida-bly connected jaw elements provided with worb-engaging inei'i'ihers, one of said jaw elements being provided with a shank, and an actuating element rotatably mounted on said shank, the other of said jaw elements being provided with a series of rack teeth disposed respectively on opposite sides of said actuating element, and the latter having areuate series of teeth selectively engageable with either series of rack teeth.

In testimony whereof I aflix my signature.

XVILLIAH H. FISHEl-t. 

